Cotter-pin extractor



Patented Aug. 30, 192 1.

INVENTOR.

A TTORNE Y.

James L. WILLIAMS, or PEMBE'RVILLE, 01110.

' comm-211v nx'rnacron.

Specification of Letters Patent. Patented Aug. 30, 1921.

Application filed February 10, 1921. Serial No. 443,848. I

To aZZ whom it may concern Be it known that I, JAMES L. WILLIAMS, a citizen of the United States, residing at Pemberville, in the county of Wood and State of Ohio, have invented certain new and useful Improvements in Cotter-Pin Extractors, of which the following is a specification.

This invention relates to cotter pin extractors, the principal object of which is to provide an implement which may be used to effectively withdraw the cotter in, even though the working space around t e cotter pin be relatively small.

A-nother object of the invention is to provide an extractor which is characterized by a maximum leverage to facilitate removal of the cotter pin, the extractor being so constructed that there is little or no chance of it being sprung, or in any Way distorted even though, it be necessary to apply considerable force for removing the pin.

The above and other objects of this invention will be in part described and in part understood from the following description of the present preferred embodiment of the invention taken in connection with the accompanying drawings, wherein:

Figure 1 is a plan View of an extractor constructed in accordance with this invention showing the jaws thereof closed.

Fig. 2 is a fragmentary plan view showing the jaws in an open position.

ig. 3 is a fragmentary new of the inside of one of the jaws.

Fig. 4 is a similar view of the other jaw, and

Fig. 5 is a sectional view taken on the line.

5-5 of Fig. 1, looking in the direction of the arrow.

In the drawings, a pair of handles 6 and 7 are provided which cross intermediate their ends and are pivotally connected as indicated at 8. The portions of the handle beyond said pivot point are formed to provide jaws 9 and 10. Each of these jaws is relatively fiat on its opposite sides. The jaw 9 tapers to a flat point 11, as illustrated to advantage in Figs. 2 and 5. This pointed end is bent at right angles to provide a claw which is adapted for engagement in a correspondingly formed opening 12 formed in the jaw 10. The inner face of each jaw is equipped with longitudinally extending corrugations or ribs 13 whereby when said jaws close the ribs will intermesh for purposes hereinafter set forth.

Upon reference to Fig. 3 of the drawings, it will be noted that the jaw 10 is widened at ts outer end and has the opening 12 thereof formed adjacent one of the lateral margins of the jaw. The opposite margin is adapted to serve as a contacting face, serving as a fulcrum when pressure is exerted upon the handles engaging the claw 11 with the head of a cotter pin. By corrugating the'proximate faces of the jaws, it will be noted that the jaws 10 will be thereby locked together so as to move in unison, even though only one of the jaws embraces the work through which the cotter pin is inserted. Moreover, after the cotter pin has been elevated by movement of the handles, the corrugated faces of said jaws are engaged with the opposite sides of the cotter pin so as to effect complete removal of the latter. Since the implement usually works at right angles to the cotter pin, theeorrugations 13 by extending longitudinally along the faces of the jaws will obtain a better purchase upon the cotter pin.

In view of the above, taken in conjunction with the drawings, it will be understood that the jaws are straight so as to be capable of effective work in a comparatively small space. Moreover, since the jaws are straight the proximate faces thereof will be engaged throughout their lengths. Consequently, when using this device after the claw 11 has been engaged with the loop or head of the cotter pin, the handles are closed so as to close the jaws and permit the free terminal of the claw 8 to extend through the opening 12. When in this position the corrugations of the jaws intermesh. Downward pressure on said handles-will cause the implement to fulcrum on the outer end of the jaw 10 so as to disengage the cotter pin,

provide straight jaws equipped with comeach other to embrace the head 01 the pin, the proximate faces of said jaws being equipped with ribs extending longitudinally of the jaws to grip and retain the cotter. pin therebetween when the jaws are operated.

2. A cotter pin extractor including a pair of handles crossed intermediate their ends and pivotally connected, the portions of said handles beyond said pivot being formed to plement loop of the cotter plemental corrugations on their inner faces which mesh throughout the length of the jaw, and corresponding means formed on the outer ends of said jaws to engage the p111. In testimony whereof I aflix my signature in presence of two witnesses. JAMES. L. WILLIAMS.

Witnesses:

RICHARD R. YODER, J. G. JOHNSON. 

